/*
 * Copyright 2022 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import fs from 'fs-extra';
import { dirname } from 'path';
import { resolveSafeChildPath } from '@backstage/backend-common';
import { SerializedFile } from './types';

/**
 * Deserializes a list of serialized files into the target directory.
 *
 * This method uses `resolveSafeChildPath` to make sure that files are
 * not written outside of the target directory.
 *
 * @public
 */
export async function deserializeDirectoryContents(
  targetPath: string,
  files: SerializedFile[],
): Promise<void> {
  for (const file of files) {
    const filePath = resolveSafeChildPath(targetPath, file.path);
    await fs.ensureDir(dirname(filePath));
    await fs.writeFile(filePath, file.content); // Ignore file mode
  }
}
